ISL9440BIRZ-T Intersil, ISL9440BIRZ-T Datasheet - Page 12

• Manufacturer Part Number: ISL9440BIRZ-T
• Description: IC CTRLR PWM OUT-OF-PHASE 32-QFN
• Manufacturer: Intersil

Specifications of ISL9440BIRZ-T

• Pwm Type: Current Mode
• Number Of Outputs: 4
• Frequency - Max: 340kHz
• Duty Cycle: 93%
• Voltage - Supply: 4.5 V ~ 24 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Frequency-max: 340kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Typical Performance Curves
(Oscilloscope Plots are Taken Using the ISL9440BEVAL1Z Evaluation Board, V
FIGURE 12. SHUTDOWN CURRENT vs V
FIGURE 14. PHASE NODE PWM WAVEFORMS, V
120
100
80
60
40
20
0
FIGURE 16. PGOOD RISING AFTER START UP
0
FLOATING)
PWM2, 10V/DIV
5
PWM3, 10V/DIV
PGOOD, 5.0V/DIV
V
V
OUT2
OUT1
, 2.0V/DIV
, 2.0V/DIV
10
12
V
IN
PWM1, 10V/DIV
(V)
15
IN
(Continued)
(PGOOD and RST
V
OUT2
20
50ms/DIV
1.0µs/DIV
IN
, 2.0V/DIV
ISL9440B, ISL9440C
= 24V
25
IN
FIGURE 15. PWM SOFT-START WAVEFORMS, PRE-BIASED,
FIGURE 13. PWM SOFT-START WAVEFORMS, C
= 19V Unless Otherwise Noted).
V
CC5V
FIGURE 17. PGOOD FALLING TO RST FALLING
, 5.0V/DIV
C
SS
= 22nF
RST , 5.0V/DIV
PGOOD, 5.0V/DIV
V
OUT1
, 2.0V/DIV
V
V
V
V
OUT4
OUT1
V
V
V
OUT2
OUT3
5.0ms/DIV
OUT3
OUT1
OUT2
5ms/DIV
(LDO), 2.0V/DIV
, 2.0V/DIV
, 2.0V/DIV
10
, 5.0V/DIV
, 2.0V/DIV
, 2.0V/DIV
, 2.0V/DIV
SS
µs
June 24, 2010
= 22nF
/DIV
FN6799.3